Ethernet diagnostics software

Dave Smith dave at
Sat Mar 25 10:27:48 MST 2006

Jonathan Duncan wrote:
> On Fri, 24 Mar 2006, rorith at wrote:
>> Output of ifconfig. Notice the 'RX/TX Packets' lines, with errors,
>> dropped, and whatnot.
>> eth0      Link encap:Ethernet  HWaddr 00:00:1A:19:2F:76
>>          inet addr:  Bcast:  
>> Mask:
>>          inet6 addr: fe80::200:1aff:fe19:2f76/64 Scope:Link
>>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>          RX packets:52551893 errors:0 dropped:0 overruns:0 frame:0
>>          TX packets:59455918 errors:0 dropped:0 overruns:0 carrier:0
>>          collisions:0 txqueuelen:1000
>>          RX bytes:6905352431 (6585.4 Mb)  TX bytes:39305941535 
>> (37485.0 Mb)
>>          Interrupt:31
> I forgot that ifconfig did that.  Good reminder.
Excellent. Thanks!

By the way, now I'm coming at you over 700 feet of cat5e cable, with a 
splice at 430 feet. The IEEE 802.3 engineers would be proud that their 
protocol performed so well beyond the spec. One note: I had to run at 
10Mbps at this distance, while I was able to run at 100Mbps at 430 feet. 
Also, I couldn't get any connectivity at 1000 feet (just link lights, 
but no data).

This has been a fun experiment. Thanks for the comments on ifconfig and mtr.


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